Add configurable WrapText measurement to AutoFitColumns (#2427)#2428
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…surement in AutoFitColumns; fix per-line East Asian width reset
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Implements #2427.
Adds a
WrappedTextAutofitMode property toExcelTextSettings, backed by a neweWrappedTextAutofitModeenum, giving control over how cells withWrapTextenabled contribute to column width inAutoFitColumns().Modes:
Skip— wrapped cells are ignored during autofit (default; preserves current behaviour).FullText— the entire cell text is measured as a single line.SplitNewLine— split on explicit line breaks (CR, LF, CRLF); widest line drives the width.SplitWord— split on whitespace (space, tab, line breaks) and hyphens (U+002D, U+2010); widest segment drives the width. Visible hyphens are included in the segment width, whitespace is not.Changes:
New
eWrappedTextAutofitModeenum andWrappedTextAutofitModeproperty onExcelTextSettings, propagated to the measurer.Reworked
MeasureTextInternalto measure per segment; the widest segment determines the result.Fixed a pre-existing bug where East Asian character width accumulated across all lines instead of resetting per line.
Deprecated the internal
MeasureWrappedTextCellsflag via[Obsolete], mapping to the new enum.Tests: Added coverage for all four modes plus CRLF handling, widest-segment-first, hyphen-as-visible-boundary, and the East Asian per-line reset.
Notes:
Applies to the generic font-metrics measurer; the System.Drawing measurer currently ignores the setting (to be addressed before the next release).
MeasureWrappedTextCellsremoval and theITextMeasurerinterface cleanup are deferred to EPPlus 9.